sturmey archer 3 spd hub………..how to put a age to it??

how do you put a age to a sturmey arches sa hub.
it is a 3spd one……….sure that there is a way of dating them.

this should show you what you want to know

bloody hell…………..i thought i had netted a collectors item.
1988 it is then………….. 😉

cheers sam.

no probs, got a 63 on a bike at my folks place plus a dyno hub on the front really should get the thing cleaned up for my mum